一种用于垂直方向触摸触发探针的预行程模型，具有直式样式。推导了基于力学原理的触发力模型，并以此为基础建立了预行程模型。实验探测数据表明，该模型能有效地预测不同进近方向的探测预行程。在应用该模型预测探针预行程时，只需根据探针校准数据计算一个模型参数。本文提出的预行程模型具有良好的鲁棒性，可用于减少垂直探头应用中的探头预行程。

A pretravel model for vertically-oriented touch trigger probes with straight styli. A triggering force model based on principles of mechanics was derived and used as the basis to develop the pretravel model. Experimental probing data were used to show that the model can effectively predict probe pretravel in various approach directions. In applying the model to predict probe pretravel, only one model parameter needs to be calculated from the probe calibration data. The pretravel model presented in this paper is robust and can be used to reduce probe pretravel in vertical probe applications.